Abstract: A power plant produces power by using high pressure gas to push a piston. The power plant uses a supply device to provide the high pressure gas to a cylinder and controls an admission valve and an exhaust valve to admit and exhaust the high pressure gas for pushing the piston and rotating a crank member to produce power.

Abstract: An air pressure actuator has a partition wall provided on one of a slider and a guide shaft to form two cylinder chambers between the guide shaft and the slider. Intake/exhaust systems are connected with the two cylinder chambers for supplying a compressed air into the cylinder chambers or discharging the same therefrom. Two servo valves including a large capacity servo valve and a small capacity servo valve are respectively connected with the intake/exhaust systems. A position detector for detecting the position of the slider is provided on the slider. A control device receives the detection results of the position detector and a position instruction value, to select the large capacity servo valve or the small capacity servo valve in accordance with an acceleration or deceleration zone and a constant speed zone of the slider, and to control an opening degree of a selected servo valve.

Abstract: Apparatus for driving a medical appliance has a single compressor for generating both the positive and negative pressures. The switching valves are connected to the outlet and inlet terminals of the compressor. The outlet and inlet terminals of the compressor are also connected to the positive pressure accumulator and the negative pressure accumulator, respectively. The apparatus has the pressure sensors to sense the pressures in the positive and negative pressure accumulators. When the pressure in the accumulator reaches a set pressure, at least one of the switching valves is closed. The apparatus further has the relief valves connected to the outlet and inlet terminals of the compressor. These relief valves open when the pressures of the compressor become excessive.

Abstract: A ratio pump for delivering first and second liquid beverage components in a desired ratio comprising a motor and a pump driven by the motor. The first beverage component is pressurized and is used as the driving fluid for the motor. The second beverage component is pumped by the pump. The first beverage component is exhausted from the motor and delivered along with a second beverage component delivered by the pump. The motor, which may include a piston, requires a predetermined amount of the first beverage component in order to drive the pump to deliver a known volume of the second beverage component.

Abstract: A valving mechanism for a cylinder-piston unit wherein the extreme positions of the piston are not positively controlled by a crankshaft or similar device. Inlet and exhaust valves are respectively mounted in a cylinder head and are operated by actuating rods projecting into the path of the piston.

Abstract: An asymmetrical vibrator is provided, which is actuated by compressed air. The vibrator operates in a case, which has two bores disposed parallel on opposite sides of the casing. One of the bores is smaller than the second bore and the piston operating in the small bore is called the slow piston, since it is actuated with air to a relatively slow motion and the piston operating in the second larger bore is called the fast piston, since it is moves at a larger speed when driven directly by the compressed air. The asymmetric vibration motion can be employed to transport materials upwardly in factories and assembly stations. The air operated asymmetric vibrators need low maintenance and do not entail the spark dangers caused by the presence of electrical wiring for electrical drive motors.

Abstract: This relates to a pneumatic feed system for moving a labeler head of a labeling apparatus for depositing labels in mold halves of a blow molding apparatus. The relatively heavy labeler head must be rapidly accelerated and then rapidly decelerated and at the same time moved sufficiently so as to provide for a large number of back and forth cycles per minute. There is provided in association with compressible shock absorbers a pneumatic system including a high pressure supply and a low pressure supply together with throttle valves such that the gas in the unpressurized end of the cylinder is rapidly compressed near the end of the stroke to function as a shock absorber and further, the cylinder is of a much larger diameter than that required for moving the labeler head so as to permit for the rapid acceleration as well as the rapid deceleration.

Abstract: A motor is provided of the piston or diaphragm type in which vacuum is constantly applied to one side of a piston or the like and air under pressure is constantly applied to the opposite side to drive the piston through a stroke. The vacuum and pressurized air may be obtained from sources outside the motor. A valve mechanism driven by the motor reverses the application of vacuum and air pressure when the piston reaches each end of its stroke so that power is continuously applied to both sides of the piston during both forward and reverse movement thereof. Different pistons are arranged out of phase with one another to provide a smooth flow of mechanical power. In one version, the motor drives an air pump having a vacuum inlet and an air pressure outlet, and by connecting such inlet and outlet to the valve mechanism, the motor will drive a load as well as itself. In another version, the motor has an internal combustion apparatus incorporated therewith.